Table 1.

Fatigue Severity Scale (FSS).

		PD
		(n = 114)
FSS 1	My motivation is lower when I am fatigued	4.9 (2.1)
FSS 2	Exercise brings on my fatigued	5.3 (1.9)
FSS 3	I am easily fatigued	4.5 (2.0)
FSS 4	Fatigue interferes with my physical functioning	4.3 (2.1)
FSS 5	Fatigue causes frequent problems for me	4.0 (2.1)
FSS 6	My fatigue prevents sustained physical functioning	4.2 (2.1)
FSS 7	Fatigue interferes with carrying out certain duties and responsibilities	4.1 (2.1)
FSS 8	Fatigue is among my 3 disabling symptoms	3.6 (2.1)
FSS 9	Fatigue interferes with my work, family or social life	3.8 (2.1)
FSS	Total score	4.3 (1.7)